Three-dimensional holographic display equipment based on projection array

Abstract

The utility model discloses a three-dimensional holographic display device based on a projection array, which comprises a plastic shell, a glass cover, a brushless motor, a rotating mechanism, a projection mechanism and a control mechanism, and is characterized in that the glass cover is arranged at the top end of the plastic shell, and a plurality of cushion corners are arranged at the bottom end of the plastic shell; the brushless motor is fixedly arranged at the bottom end of the inner side of the plastic shell, and the driving end of the brushless motor faces the glass cover. The rotating mechanism is fixedly mounted at the driving end of the brushless motor; the projection mechanism is arranged on the inner side of the rotating mechanism; the control mechanisms are arranged at the bottom end of the inner side of the plastic shell and connected to the rotating mechanisms and the control mechanisms respectively, the device relates to the technical field of holographic display, the three-dimensional holographic display equipment based on the projection array achieves stable, efficient and high-quality three-dimensional holographic display, and unprecedented visual experience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of holographic display, in particular to a stereoscopic holographic display device based on a projection array. Background Art

[0002] In existing stereoscopic display technologies, in order to achieve full-view 3D effects, it is usually necessary to use multiple projectors to cover different viewing angles, or to use special optical systems to simulate different viewing angles. These technologies often require a large number of projection devices, resulting in high costs and complex installation. In addition, existing projection equipment may produce large vibrations and noise when rotating at high speeds, affecting the stability of the display and the viewing experience. In addition, heat dissipation is also a difficult problem that existing equipment needs to overcome, especially when running for a long time and working at high loads, insufficient temperature control inside the equipment may lead to performance degradation or equipment damage. Existing power supply methods may have problems with cable restraints and unstable power supply.

[0003] There are certain deficiencies in the methods of achieving full-view 3D effects in the prior art. The method of using multiple projectors to cover different viewing angles requires a large number of projection devices, resulting in high costs and complex installation. Existing projection equipment may produce large vibrations and noise when rotating at high speeds, affecting the stability of the display and the viewing experience. Existing power supply methods may have problems with cable restraint and unstable power supply. In response to these deficiencies, this case was created. Utility Model Content

[0004] The purpose of the utility model is to provide a stereoscopic holographic display device based on a projection array to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stereoscopic holographic display device based on a projection array, comprising: a plastic shell and a glass cover, the glass cover is arranged at the top end of the plastic shell, and a plurality of pad corners are arranged at the bottom end of the plastic shell; a brushless motor, the brushless motor is fixedly arranged at the bottom end of the inner side of the plastic shell, and the driving end faces the glass cover; a rotating mechanism, the rotating mechanism is fixedly mounted on the driving end of the brushless motor; a projection mechanism, the projection mechanism is arranged on the inner side of the rotating mechanism; a control mechanism, the control mechanisms are respectively arranged at the bottom end of the inner side of the plastic shell, and are respectively connected to the rotating mechanism and the control mechanism.

[0006] In a feasible embodiment, the rotating mechanism includes: a rotating frame, which is fixedly mounted on the driving end of the brushless motor; support rods, several of which are respectively mounted on the edge of the rotating mechanism, wherein the top ends of two of the support rods extend to the top of the inner side of the glass cover; a mounting frame, which is arranged on several of the support rods and connected to the rotating frame; and a partition, the bottom end of which is fixedly mounted on the top end of the mounting frame.

[0007] In a feasible implementation manner, balance pulleys are respectively installed at the bottom ends of the outer sides of the outer walls of several support rods, and the outer edge portions of several balance pulleys are in contact with the plastic shell.

[0008] In a feasible implementation, the projection mechanism includes: a curtain wall, the two ends of which are respectively fixedly arranged between two support rods extending to the inner top of the glass cover; an LED three-color light source, the number of which is two groups, and which are respectively arranged on the inner side of a mounting frame; a projection source, the two projection sources are respectively arranged at the top of the mounting frame and penetrate the surface of the partition, and the two projection sources are arranged perpendicular to the curtain wall; a DMD chip, a plurality of the DMD chips are respectively arranged at the two ends of the mounting frame.

[0009] In a feasible implementation manner, a through hole is provided in the middle portion of the partition, two heat sinks are provided in the middle portion of the mounting frame, and heat sinks are further provided on the top of the two heat sinks, and the heat sinks are arranged concentrically with the through hole.

[0010] In a feasible embodiment, the control mechanism includes: a power board, which is arranged at the bottom end of the inner side of the plastic shell; a battery, which is installed at the bottom end of the inner side of the plastic shell and is connected to the power board through a wire; a main board, which is arranged at the top of the rotating frame and is connected to the LED three-color light source through a wire; a wireless power supply module, which consists of a transmitting end and a receiving end, the transmitting end is arranged at the bottom end of the inner side of the plastic shell, and the receiving end is located on the rotating frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the device realizes high-speed rotation of the projection mechanism through the combination of the rotating mechanism and the support rod, so that images at multiple angles can be projected continuously, forming a three-dimensional holographic effect, enhancing visual impact and immersion. The setting of the balance pulley significantly reduces friction and vibration during rotation, improves the smoothness and efficiency of rotation, and extends the service life of the equipment. The design of the partition and heat sink effectively solves the heat dissipation problem during the operation of the equipment, maintains the internal temperature of the equipment stable, and prevents performance degradation caused by overheating. The use of the wireless power supply module not only provides a flexible power supply method and reduces cable constraints, but also improves the reliability and safety of the equipment. The three-dimensional holographic display device based on the projection array realizes stable, efficient and high-quality three-dimensional holographic display, bringing users an unprecedented visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the rotating mechanism of the utility model;

[0014] Figure 3 It is a schematic diagram of a partition of the utility model;

[0015] Figure 4 It is a schematic diagram of the projection mechanism of the utility model.

[0016] In the figure: 1. plastic shell, 2. glass cover, 3. brushless motor, 4. rotating frame, 5. support rod, 6. mounting frame, 7. partition, 8. balance pulley, 9. curtain wall, 10. LED three-color light source, 11. projection source, 12. DMD chip, 13. heat sink, 14. heat sink, 15. power board, 16. battery, 17. main board, 18. wireless power supply module. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 4The utility model provides a technical solution: a stereoscopic holographic display device based on a projection array, comprising: a plastic shell 1, a glass cover 2, a brushless motor 3, a rotating mechanism, a projection mechanism and a control mechanism, wherein the glass cover 2 is arranged at the top of the plastic shell 1, and a plurality of pad angles are arranged at the bottom end of the plastic shell 1; the brushless motor 3 is fixedly arranged at the bottom end of the inner side of the plastic shell 1, and the driving end faces the glass cover 2; the rotating mechanism is fixedly installed on the driving end of the brushless motor 3; the projection mechanism is arranged on the inner side of the rotating mechanism; the control mechanisms are respectively arranged at the bottom end of the inner side of the plastic shell 1, and are respectively connected to the rotating mechanism and the control mechanism.

[0019] In the specific implementation process, it should be noted that the brushless motor 3 is started at the bottom end of the inner side of the plastic shell 1 to drive the rotating mechanism to start high-speed rotation. A projection mechanism is installed on the rotating mechanism. The DMD chip 12 in the projection mechanism is responsible for switching the state of the three primary color light sources to form a color image. Under the principle of visual persistence, the rotation speed is accurately controlled by the control mechanism so that the projection mechanism refreshes the projected image every time it rotates 1°±0.1°. The two projection sources 11 are lit in a time-sharing manner to reduce the load. In this way, when the projection mechanism rotates 360°, a single projection source 11 will refresh the image 180 times. In this process, In the embodiment, the DMD chip 12 switches at a speed of 4500 times per second to ensure the continuity and dynamic effect of the image. Under such a high-speed switching state, the gray scale of the DMD chip 12 is relatively low. By lighting the three primary color light sources in time-sharing, rich color images can be formed. The entire display device presents a three-dimensional holographic effect through this rotating projection scheme under the encapsulation of the plastic shell 1 and the glass cover 2. In order to enhance the display effect, the number of projection mechanisms can be increased to further improve the visual impact. The rotation speed of the projection mechanism is maintained at 1500 to 3000 revolutions per minute, ensuring the stability and smoothness of the display effect.

[0020] In some examples, further, the rotating mechanism includes: a rotating frame 4, a support rod 5, a mounting frame 6 and a partition 7, the rotating frame 4 is fixedly mounted on the driving end of the brushless motor 3; a plurality of support rods 5 are respectively mounted on the edge of the rotating mechanism, wherein the top ends of two support rods 5 extend to the top of the inner side of the glass cover 2; the mounting frame 6 is arranged on a plurality of support rods 5 and connected to the rotating frame 4; the bottom end of the partition 7 is fixedly arranged on the top end of the mounting frame 6.

[0021] In the specific implementation process, it should be noted that the rotating frame 4 is fixedly mounted on the driving end of the brushless motor 3. As the brushless motor 3 is started, the rotating frame 4 starts to rotate at high speed. Around the rotating frame 4, the support rods 5 play a fixing and supporting role, which helps to guide the top ends of two specific support rods 5 to extend to the top of the inner side of the glass cover 2, providing an installation position for the curtain wall 9. The partition 7 is used to separate and maintain the appropriate distance between the projection sources 11 to prevent mutual interference, and at the same time provide an installation platform for the projection mechanism. The partition 7 and the mounting frame 6 together ensure that the projection mechanism can still maintain accurate positioning and efficient imaging effects when rotating at high speed, thereby significantly improving the clarity and three-dimensional sense of the three-dimensional holographic display.

[0022] In some examples, further, balance pulleys 8 are respectively installed at the bottom ends of the outer sides of the outer walls of the plurality of support rods 5 , and the outer edges of the plurality of balance pulleys 8 are in contact with the plastic housing 1 .

[0023] During the specific implementation process, it should be noted that when the device is started, the brushless motor 3 drives the support rod 5 and the balance pulley 8 thereon to rotate at high speed through the rotating frame 4. Since the outer edge of the balance pulley 8 is in contact with the plastic shell 1, the friction and vibration that may be generated during the rotation process are effectively reduced, ensuring the smoothness of the rotation. When the rotating mechanism moves, the balance pulley 8 forms a low-friction rolling contact surface between the support rod 5 and the plastic shell 1, which helps to reduce energy loss, improve rotation efficiency, and extend the service life of the equipment. The structural design of the balance pulley 8 also takes into account the overall balance of the equipment, ensuring the stability and safety of the entire rotating mechanism during high-speed rotation, so that the visual effect of the three-dimensional holographic display is clearer and more coherent. While maintaining the compact structure of the equipment, the balance pulley 8 significantly improves the overall performance and display effect of the equipment.

[0024] In some examples, further, the projection mechanism includes: a curtain wall 9, an LED three-color light source 10, a projection source 11 and a DMD chip 12, the two ends of the curtain wall 9 are respectively fixedly arranged between two support rods 5 extending to the inner top of the glass cover 2; the number of the LED three-color light sources 10 is two groups, and they are respectively arranged on the inner side of the mounting frame 6; the two projection sources 11 are respectively arranged at the top of the mounting frame 6 and penetrate the surface of the partition 7, and the two projection sources 11 and the curtain wall 9 are arranged perpendicular to each other; and multiple DMD chips 12 are respectively arranged at both ends of the mounting frame 6.

[0025] In the specific implementation process, it should be noted that the curtain wall 9 is used as a projection carrier, and its two ends are fixed between two support rods 5 extending to the top of the inner side of the glass cover 2, forming a stable projection plane. The LED three-color light source 10 is installed on the inner mounting frame 6 and is divided into two groups so as to form a color image by time-sharing lighting. Among them, the LED three-color light source forms a color image and projects it onto the curtain wall, which is a well-known technology in the art. Again, no further elaboration is made. The two projection sources 11 are perpendicular to the curtain wall 9 to ensure that the image can be accurately projected onto the curtain wall 9. At the same time, the DMD chips 12 are installed at both ends of the mounting frame 6. They are responsible for receiving the light from the LED three-color light source 10 and accurately projecting the light by switching the micromirror state at high speed. To the designated position on the curtain wall 9, thereby forming a high-resolution image. When working, the DMD chip 12 switches states 4500 times per second. At present, the shortest time for the DMD micromirror to continuously switch states is 10 microseconds. Since the DMD chip 12 improves the display grayscale by high-speed oscillation, its grayscale is relatively low when switching states 4500 times per second. The three primary color light sources are lit in time-sharing to form a color image and displayed on the curtain wall 9. Through the cooperation of the rotating mechanism and the balance pulley 8, three-dimensional holographic image display at different angles is realized, which ensures the clarity of the projection and the accuracy of the color. Through precise control, the three-dimensional holographic effect is more vivid and three-dimensional. The efficient collaborative work of the entire projection mechanism presents an amazing visual experience for users.

[0026] In some examples, further, a through hole is provided in the middle portion of the partition 7, two heat sinks 13 are provided in the middle portion of the mounting frame 6, and heat sink plates 14 are also installed on the top of the two heat sinks 13, and the heat sink plates 14 are arranged concentrically with the through hole.

[0027] In the specific implementation process, it should be noted that a through hole is provided in the middle part of the partition 7, so as to allow air to circulate inside the device, which is helpful for heat dissipation. Two heat sinks 13 are provided in the middle part of the mounting frame 6. The heat sink 13 improves the heat transfer efficiency by increasing the heat dissipation area. A heat sink 14 is also installed on the top of the heat sink 13. The heat sink 14 is concentrically arranged with the through hole in the partition 7. Such a layout is conducive to forming a channel for air flow, further enhancing the heat dissipation effect. When the device is working, the heat sink 13 absorbs heat, and then the heat is quickly dissipated from the heat dissipation holes on the outside of the plastic shell 1 to the outside through the action of the heat sink 14 and the through hole, so as to keep the internal temperature stable, effectively prevent the performance degradation of the device due to overheating, and extend the service life of the device, ensuring that the stereoscopic holographic display device can maintain the best working state during continuous operation, and provide users with a stable and high-quality stereoscopic holographic visual experience.

[0028] In some examples, further, the control mechanism includes: a power board 15, a battery 16, a main board 17 and a wireless power supply module 18, the power board 15 is arranged at the bottom end of the inner side of the plastic shell 1; the battery 16 is installed at the bottom end of the inner side of the plastic shell 1, and is connected to the power board 15 through a wire; the main board 17 is arranged at the top of the rotating frame 4, and is connected to the LED three-color light source 10 through a wire; the wireless power supply module 18 is composed of a transmitting end and a receiving end, the transmitting end is arranged at the bottom end of the inner side of the plastic shell 1, and the receiving end is located on the rotating frame 4.

[0029] In the specific implementation process, it should be noted that the power board 15 and the battery 16 cooperate with each other and are responsible for providing the required power for the internal components of the device. The main board 17 is located at the top of the rotating frame 4 and is connected to the LED three-color light source 10 through wires. It is responsible for controlling the lighting sequence of the LED light source and the switching of the DMD chip 12 to generate the required image. When working, the transmitting end of the wireless power supply module 18 transmits power to the receiving end on the rotating frame 4 wirelessly, providing continuous power supply for the electronic components in the rotating mechanism, avoiding wear and limitation caused by the rotation of the wires. Among them, the wireless power supply technology is an existing technology (its detailed working principle is not repeated here), which improves the flexibility and reliability of the equipment and keeps the internal structure of the equipment neat. The work flow of the control mechanism ensures stable power supply and precise control of the equipment during operation, providing guarantee for the efficient operation of the stereoscopic holographic display device.

[0030] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "towards", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "two ends", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly stipulated and limited, terms such as "setting", "installation", "connection", "fixed installation", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stereoscopic holographic display device based on a projection array, characterized in that: include: A plastic shell and a glass cover, wherein the glass cover is arranged at the top end of the plastic shell, and a plurality of pad corners are arranged at the bottom end of the plastic shell; A brushless motor, wherein the brushless motor is fixedly arranged at the bottom end of the inner side of the plastic housing, and the driving end faces the glass cover; A rotating mechanism, wherein the rotating mechanism is fixedly mounted on a driving end of the brushless motor; A projection mechanism, wherein the projection mechanism is arranged inside the rotating mechanism; The control mechanisms are respectively arranged at the bottom end of the inner side of the plastic shell and are respectively connected to the rotating mechanism and the control mechanism.

2. The stereoscopic holographic display device based on a projection array according to claim 1, characterized in that: The rotating mechanism comprises: A rotating frame, wherein the rotating frame is fixedly mounted on the driving end of the brushless motor; Support rods, wherein a plurality of the support rods are respectively installed at the edge of the rotating mechanism, and the top ends of two of the support rods extend to the top of the inner side of the glass cover; A mounting frame, the mounting frame is arranged on a plurality of the support rods and connected to the rotating frame; A partition, the bottom end of which is fixedly arranged on the top end of the mounting frame.

3. The stereoscopic holographic display device based on a projection array according to claim 2, characterized in that: The bottom ends of the outer sides of the outer walls of the plurality of support rods are respectively provided with balancing pulleys, and the outer edges of the plurality of balancing pulleys are in contact with the plastic shell.

4. The projection array-based stereoscopic holographic display device according to claim 1, characterized in that: The projection mechanism comprises: The curtain wall has two ends fixedly disposed between two support rods extending to the inner top of the glass cover; LED three-color light sources, the number of the LED three-color light sources is two, and the three-color light sources are respectively arranged on the inner side of the mounting frame; Projection sources, wherein two projection sources are respectively arranged at the top of the mounting frame and penetrate the surface of the partition, and the two projection sources are arranged perpendicular to the curtain wall; DMD chips, a plurality of DMD chips are respectively arranged at two ends of the mounting frame.

5. The projection array-based stereoscopic holographic display device according to claim 2, characterized in that: A through hole is arranged in the middle of the partition, two heat sinks are arranged in the middle of the mounting frame, and heat sinks are arranged on the tops of the two heat sinks. The heat sinks are arranged concentrically with the through hole.

6. The stereoscopic holographic display device based on a projection array according to claim 1, characterized in that: The control mechanism comprises: A power board, which is arranged at the bottom end of the inner side of the plastic shell; A battery, which is installed at the bottom of the inner side of the plastic housing and connected to the power board through a wire; A main board, which is arranged at the top of the rotating frame and connected to the LED three-color light source through a wire; A wireless power supply module, the wireless power supply module consists of a transmitting end and a receiving end, the transmitting end is arranged at the bottom end of the inner side of the plastic shell, and the receiving end is located on the rotating frame.

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